RU1773429C - Plate-type column - Google Patents

Abstract

Usage: for conducting heat and mass transfer processes in the system. SUMMARY OF THE INVENTION: A poppet column includes a vertical cylindrical body, partitioned by horizontal plate-type plates, nozzles for supplying and removing phases. The plate is equipped with rods rigidly connected to them, with floats and vessels, while the floats are placed in the vessel, and the vessel is connected to the nozzles for supplying and discharging liquid, the rods are located at an angle with respect to the liquid level. 5 ill.

Description

The invention relates to devices for conducting heat and mass transfer processes in the system and can be used in the chemical, petrochemical and other industries.

A plate column is known, including a vertical cylindrical body, sectioned by horizontal plate-type plates, nozzles for supplying and removing the phases to be processed.

This column is closest to the invention and selected as a prototype.

The disadvantage of this column is a narrow range of loads in the interacting phases due to the inability to control the local speed in the gap between the plates. Fluctuation of the latter leads to a decrease in the intensity of phase contact and the mass transfer process as a whole.

The purpose of the invention is to increase the efficiency of the column by selecting and maintaining rational operating conditions, taking into account the intensity of the process of heat and mass transfer, spraying and back mixing of the liquid.

This goal is achieved by the fact that in a plate column comprising a vertical cylindrical body, sectioned by horizontal plate-type plates., Nozzles for supplying and removing the processed phases, according to the invention, the plates are rigidly connected to the rods equipped with floats, while the floats are placed in a vessel connected to the pipelines for supplying and discharging the regulating fluid, the rods being located at an angle with respect to the level of the regulating fluid.

Making the plates movable allows you to change their position and thus control the gas cross-section for gas taking into account changes in its parameters (temperature, pressure, flow). This ensures the maintenance and selection of rational modes of the process

Supply of individual plates with rods equipped with n, and at the ends, floats placed in a vessel having piping

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for supplying and discharging a control liquid, it is possible to adjust the position of the plates, i.e. when the vessel is filled with liquid, the floats float and the angle of inclination of the plates to the horizontal decreases and, accordingly, the cross section for the passage of gas. Consequently, as the liquid level in the vessel increases, the gas cross section increases and the local velocity decreases.

Taking into account that the amount of the absorbed component is proportional to the mass transfer coefficient, and the latter is a function of the Reynolds criterion, the maximum efficiency of the mass transfer process is ensured under given specific operating conditions.

Figure 1 shows a General view of the device; Figures 2 and 3 show a change in the position of the plates relative to one another; figure 4 is a section along aa in figure 1; figure 5 is a section along BB in figure 1.

The device includes a vertical cylindrical housing 1, partitioned by horizontal plates 2 of the plate type, made of separate plates 3 mounted with a possibility of rotation in the supports. 4. The plates 4 are mounted on axles 5 and are rigidly connected to the rods 6 provided with floats 7. Floats 7 placed in a vessel 8, equipped with nozzles 9 and 10, respectively, for supplying and discharging control fluid. Absorbent and gas are supplied through nozzles 11 and 12, respectively, and exhaust through nozzles 13 and 14.

The plate dish column works as follows.

Through the nozzles 9, the vessels 8 are filled with liquid and a certain live section of the plates 2 is established. Through the nozzles 11 and 12, the phases to be processed are fed into the column, respectively, the absorbent and

gas. On plates 2 there is a contact of the components.

The efficiency of the process is determined by the local speed, which depends on the live section of the plates 2. The live section of the plates 2 during operation is controlled by changing the level in the vessels 8. Moreover, this change, and accordingly the regulation of the live section of the plates 2, can be carried out independently for each individual plate . The level in the vessels 8 is controlled by draining or supplying fluid through the nozzles 10 and 9, respectively.

In this way, the process can be controlled taking into account the flow rate of the phases to be treated, the required process efficiency, entrainment and back mixing of the gas. Changing the position of the plates 4 by adjusting the liquid level in the vessels 8 is clear from Figs. 2 and 3, the spent absorbent and gas are discharged through the pipes 13 and 14, respectively.

The technical and economic efficiency of the claimed device as compared to the prototype consists in the ability to control the heat exchange process taking into account the phase flow rate, the required efficiency and spraying.

Claims (1)

The claims Poppet column, comprising a vertical cylindrical body, partitioned by horizontal plate-type plates, nozzles for supplying and withdrawing the processed phases, characterized in that, in order to increase the efficiency of the column by controlling the process, each plate is equipped with rods rigidly connected to them and vessels, while the floats are placed in the vessel, and the vessel is connected to the nozzles for supplying and discharging liquid, the rods are located at an angle with respect to the liquid level. about: m t go ggg. " t-Cl lr- i 153 ™ I Level Figz liquid m. & i / z4 f Figure 5